A video capturing a brutal brawl between a group of South Auckland school girls has gone viral.
The footage, which has been filmed using a cell phone camera, shows a dozen or so girls involved in a fight.
Two police officers are also filmed trying to stop the fight.
Police are now investigating, a spokeswoman confirmed this morning.
The brawl involved students from Manurewa High School, and was organised through Facebook, she said.
Around 40 to 50 teenagers arrived to either watch, or participate in the fight, about 1.30pm yesterday on Browns Rd in Manurewa.
One of the young girls involved had now been referred to Youth Aid, the spokeswoman said.
No one was injured during the fight, she said.
The video, which was uploaded to Facebook yesterday, has been viewed more than 790,000 times.
It has been shared more than 5000 times, and has topped 15,000 likes.
Manurewa High School principal Salvatore Gargiulo said he was "very disappointed that a group of girls have let themselves down".
Senior pupils had been on study leave this week, coming in only to sit exams. That had made it "hard to get a tag on conflicts", he said.
The school was not open today, but Mr Gargiulo said a group of staff members would be visiting students to "get to the bottom of what happened".
Not the first time high school fight footage found online
This is not the first time footage of fights involving high school students has appeared online.
Last month a mob of schoolboys from three different schools turned on a 19-year-old who was picking his little sister up from school, when he tried to stop them attacking a younger student.
Two students aged 17 and 18 were charged with assault for their part in a 60-student fracas between students from De La Salle and St Paul's colleges at Orakei Train Station last month.
In May, a 15-year-old girl was arrested following an assault in Kaikohe that was filmed and posted online.
The assault happened at the bus depot on the corner of Mangakahia Rd and Broadway, Kaikohe.
In March, footage showed a girl crying as she was hit by another girl, before the fight was eventually broken up by bystanders.
This video was shared 1500 times on Facebook, and viewed more than 73,000 times.